Aqua sobriquet
Member
After looking at this site I was wondering, if you had a Biomaster could you just take all the trays out, fit a pipe to the head (to take the water to the bottom of the canister) and then just fill it with K1 or similar? Provided it wasn’t over filled it should be possible to “wiggle” the feed pipe down through the media.
7. Aquarium Filter Media
The media in an aquarium filter is the most important variable when setting up a filter.
aquariumscience.org